Pasture cobalt concentration and its effect on vitamin B₁₂ status of sheep grazing upland and lowland pastures in the Kaiwera district, eastern Southland, New Zealand

References

• Adams , S. N. and Honeysett , J. L. 1964 . Some effects of waterlogging on the cobalt and copper status of pasture plants grown in pots . Australian journal of agricultural research , 15 : 357 – 367 .
   Google Scholar
• Andrews , E. D. 1965 . Observations on the thrift of young sheep on a marginally cobalt-deficient area . New Zealand journal of agricultural research , 8 : 788 – 817 .
   Google Scholar
• Blakemore , L. C. , Searle , P. L. and Daly , B. K. 1972 . Methods for chemical analysis of soils . New Zealand Soil Bureau scientific report , 10A
   Google Scholar
• Clark , R. G. and Millar , K. R. 1983 . “ Cobalt ” . In The mineral requirements of grazing ruminants , New Zealand Society of Animal Production occasional publication no. 9 Edited by: Grace , N. D. 27 – 37 .
   Google Scholar
• Cornforth , I. S. 1982 . “ Plant analysis methods and interpretation ” . In AgLink FPP557 , Wellington : Media Services, New Zealand Ministry of Agriculture and Fisheries .
   Google Scholar
• Forbes , E. A. 1976 . Cobalt, copper and zinc in yellow-brown pumice soils under grazed permanent pastures . New Zealand journal of agricultural research , 19 : 153 – 164 .
   Web of Science ®Google Scholar
• Gardiner , M. R. 1977 . “ Cobalt in ruminant nutrition. A review ” . In Technical bulletin no. 36 , Department of Agriculture, Western Australia .
   Google Scholar
• Grace , N. D. 1983 . “ A summary of the mineral requirements of sheep and cattle ” . In The mineral requirements of grazing ruminants , New Zealand Society of Animal Production occasional publication no. 9 Edited by: Grace , N. D. 135 – 141 .
   Google Scholar
• Green , R. , Newmark , P. A. , Musso , D. and Mollin , D. L. 1974 . The use of chicken serum for measurement of serum vitamin B12 concentration by radioisotope dilution. Description of method and comparison with microbiological assay results . British journal of haemotology , 27 : 507 – 526 .
   PubMed Web of Science ®Google Scholar
• Leamy , M. L. 1971 . Some characteristics of the upland and high-country yellow-brown earths . New Zealand journal of science , 14 : 1057 – 1081 .
   Web of Science ®Google Scholar
• Marston , H. R. 1970 . The requirement of sheep for cobalt or for vitamin B12 . British journal of nutrition , 24 : 615 – 633 .
   PubMed Web of Science ®Google Scholar
• McIntosh , P. D. , Sherrell , C. G. and Prema , P. G. 1986 . Distribution of cobalt, copper and zinc in upland and lowland soils of the Kaiwera District, Eastern Southland, New Zealand . New Zealand Soil Bureau scientific report , 78
   Google Scholar
• McNaught , K. J. and Paul , G. W. 1939 . Seasonal variatio in cobalt content of North Island pastures . New Zealand journal of science and technology , 20A : 14 – 30 .
   Google Scholar
• Millar , K. R. , Albyt , A. T. and Bond , G. C. 1984 . Measurement of vitamin B12 in the livers and sera of sheep and cattle and an investigation of factors influencing serum vitamin B12 levels in sheep . New Zealand veterinary journal , 32 : 65 – 70 .
   PubMed Web of Science ®Google Scholar
• Millar , K. R. , Wright , D. F. and Clark , R. G. Relationship between liveweight response and diagnostic parameters in young cobalt-deficient sheep . Proceedings of 4th AAAP Animal Science Congress . pp. 431 – 431 .
   Google Scholar
• Mitchell , R. L. 1960 . Contamination problems in soil and plant analysis . Journal of the science of food and agriculture , 11 : 533 – 560 .
   Google Scholar
• Mitchell , R. L. , Reith , J. W.S. and Johnson , I. M. 1957 . Trace element uptake in relation to soil content . Journal of the science of food and agriculture , 8 : S51 – S59 .
   Google Scholar
• New Zealand Meteorological Service . 1973 . Rainfall normals for New Zealand 1941–1970 . New Zealand Meteorological Service miscellaneous publication , 145
   Google Scholar
• New Zealand Meteorological Service . 1983 . Summaries of climatological observation to 1980 . New Zealand Meteorological Service miscellaneous publication , 177
   Google Scholar
• Poole , P. R. Graphite furnace atomic absorption spectroscopic determination of cobalt and copper in herbage . Proceedings of New Zealand Institute of Chemistry Conference . August 1980 , Palmerston North .
   Google Scholar
• Sherrell , C. G. and Mcintosh , P. D. 1987 . Nutrient status of soils and pastures of the Kaiwera district, eastern Southland, New Zealand . New Zealand journal of agricultural research , 30 : 261 – 268 .
   Web of Science ®Google Scholar
• Soil Survey Staff . 1975 . “ Soil taxonomy ” . In United States Department of Agriculture agricultural handbook , Vol. 436 , Soil Conservation Service .
   Google Scholar
• Taylor , N. H. and Pohlen , I. J. 1968 . Classification of New Zealand soils. In : Soils of New Zealand Part 1 . New Zealand Soil Bureau bulletin , 26 ( 1 )
   Google Scholar
• Taylor , N. H. 1979 . Soil survey method . New Zealand Soil Bureau bulletin , 25
   Google Scholar
• Thompson , A. and Raven , A. M. 1955 . Soil contamination of herbage samples . Journal of the science of food and agriculture , 6 : 768 – 777 .
   Google Scholar
• Tressol , J. C. and Lamond , M. 1979 . The emergence and treatment of cobalt deficiency in the sheep . Annales de recherches veterinaires , 10 : 71 – 75 .
   PubMedGoogle Scholar